On the Origin of Species by Means of Natural Selection: Or The Preservation of Favored Races in the Struggle for Life, 2권D. Appleton, 1888 - 458페이지 |
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ix 페이지
... inherited at a corresponding age RUDIMENTARY ORGANS ; their origin explained — Summary Page 363-403 - CHAPTER XV . . -- RECAPITULATION AND CONCLUSION . Recapitulation of the objections to the theory of Natural Selection - Recapitulation ...
... inherited at a corresponding age RUDIMENTARY ORGANS ; their origin explained — Summary Page 363-403 - CHAPTER XV . . -- RECAPITULATION AND CONCLUSION . Recapitulation of the objections to the theory of Natural Selection - Recapitulation ...
3 페이지
... inheritance , any selected variety will tend to propagate its new and modified form . This fundamental subject of Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural Selection ...
... inheritance , any selected variety will tend to propagate its new and modified form . This fundamental subject of Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural Selection ...
5 페이지
... Inheritance - Character of Domestic Varieties -Difficulty of distinguishing between Varieties and Species - Origin of Domestic Varieties from one or more Species- Domestic Pigeons , their Differences and Origin - Principles of Selection ...
... Inheritance - Character of Domestic Varieties -Difficulty of distinguishing between Varieties and Species - Origin of Domestic Varieties from one or more Species- Domestic Pigeons , their Differences and Origin - Principles of Selection ...
8 페이지
... Inheritance . Changed habits produce an inherited effect , as in the period of the flowering of plants when transported from one climate to another . With animals the increased use or disuse of parts has had a more marked influence ...
... Inheritance . Changed habits produce an inherited effect , as in the period of the flowering of plants when transported from one climate to another . With animals the increased use or disuse of parts has had a more marked influence ...
9 페이지
... inherited is unimportant for us . But the number and diversity of inheritable deviations of structure , both those ... inheritance ; that CHAP . I. 9 Variation under Domestication .
... inherited is unimportant for us . But the number and diversity of inheritable deviations of structure , both those ... inheritance ; that CHAP . I. 9 Variation under Domestication .
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adapted admit affinities allied species America analogous ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked reproductive resemblance rudimentary seeds sexual selection slight South America stamens sterility structure struggle successive supposed tend theory tion variability variations varieties vary whilst whole wings young